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A wire under tension vibrates with a frequency of 450Hz. What would be the fundamental frequency, if the wire were half as long, twice as thick and under one fourth tension ?A. 225HzB. 190HzC. 247HzD. 174Hz |
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Answer» Correct Answer - A `n_2/n_1 = l_1/l_2 xx d_1/d_2 xx sqrt(T_2/T_1)` `=2xx1/2xxsqrt(1/4) = 1/2` `n_2 = n_1/2 = 450/2` =225Hz |
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